Antifreeze is a liquid(液体) that is added to water to keep it from freezing． When

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Antifreeze is a liquid(液体) that is added to water to keep it from freezing． When water freezes and turns to ice，it expands(膨胀)．The force of water expanding is so great that it will break the hardest metal．Water is used in car engines(发动机) to keep them cool while they run，and if this water is allowed to freeze in winter it can break the iron block of the engine．That is why antifreeze is necessary．
Water freezes at 0℃；the usual kind of antifreeze will not freeze until the temperature is－40℃．A mixture(混合物) of five parts of water and four parts of antifreeze will prevent freezing at－18℃；four parts of water and five parts of antifreeze reduce this to －22℃．
Alcohol is a kind of good antifreeze，but when the air is running it becomes hot and the alcohol boils away，so it must be changed very often．Most people use antifreeze that does not boil away when the engine is running．There are several chemicals that do this．One of the most popular is called ethylene glycol．
小题1:people use ________ to keep car engines cool．

A．antifreeze

B．water

C．alcohol

D．ethylene glycol.

小题2:The usual kind of antifreeze freezes at ________．

A．0℃

B．－18℃

C．－22℃

D．－40℃

小题3:We use antifreeze in order to ________．

A．keep alcohol in water

B．stop ice from becoming water

C．make the freezing point of water lower

D．raise the freezing point of water

小题4:Besides alcohol，________ is another kind of popular antifreeze．

A．water

B．ethylene glycol

C．any chemical

D．any mixture

小题5:The text is written to ________．

A．tell us what antifreeze is

B．make people buy antifreeze

C．tell us that cars need antifreeze

D．show us how to protect car engines

答案

小题1:B
小题2:D
小题3:C
小题4:B
小题5:A

解析

防冻液是一种液体，加入到水中可防止水结冰。当水结成冰的时候，它会膨胀。水膨胀的力很大，可以把最硬的金属涨破。这就是为什么在冬天汽车的引擎中加防冻液的原因。
小题1:细节理解题。根据文章第一段三，四两行可知。
小题2:细节理解题。根据文章第一段倒数第三行，四行可知。
小题3:细节理解题。根据文章第一段倒数一二两行可知。
小题4:细节理解题。根据文章最后一段最后一句可知。
小题5:主旨大意题。这篇文章主要讲述的是什么是防冻液以及为什么会使用防冻液。

举一反三

If the rose can be said to be a special flower, then the apple can be said to be a special fruit．It is very important in American culture．American stories speak of Johnny Appleseed, who went throughout America collecting apple seeds and planting apple trees．He had a great love for nature and went through fields and farms adding richness and beauty to the country．
One of the first sayings taught to school children is, “An apple a day keeps the doctor away．” This short saying encourages children to eat fresh fruit to keep healthy． If someone always says good words to a person, people will call him an “apple polisher”．This, however, is not a good name．If someone is very dear to us, we say that he or she is the “apple of our eye”．
Most people believe that the fruit which Eve gave to Adam was an apple, even though the Bible (圣经) never says so．The apple, therefore, is a deep part of the language and stories of America．
An apple is also delicious．Apples can be cooked in many ways, used as a dessert, and made into sweet juice．
In many parts of the country during the harvest season, a popular activity is to go into an apple garden to pick apples．Washington, D．C．and New York are both famous for their apples．
Finally, when it’s time to take a vacation to American cities, one can always visit New York, which is “the biggest apple” of all the American cities．
小题1:During these years, iphones are popular with the people all over the world. Which country is his starter--Steven Paul Jobs from?

A．America

B．England

C．Russia

D．Japan

小题2:Why was Johnny Appleseed so famous?

A．He had a great love of nature．

B．He liked the American people．

C．He went throughout the country．

D．He collected apple seeds and planted apple trees．

小题3:What does the underlined phrase “apple polisher” in Paragraph 2 mean?

A．Something for cutting apples．

B．A person who likes to please others．

C．A person who is dealing with fruits．

D．A machine for cleaning apples quickly．

小题4:Which of the following is TRUE with apples?

A．Apples are medicine．

B．Apples are the most important food．

C．New York is famous for its big apples．

D．The Bible says Adam was given an apple．

小题5:The passage is mainly about ___________．

A．apples in American culture

B．stories about the apple

C．some famous sayings of the apple

D．big cities that are famous for apples

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Passage 1
Do you always understand directions on a bottle of medicine? Do you know what is meant by “Take only as directed”? Read the following directions and see if you understand them.
“To reduce pain, take two tablets (药片) with water, followed by one tablet every eight hours, as required. For night-time and early morning relief (减缓疼痛) take two tablets at bedtime. Do not take more than six tablets in twenty-four hours.
For children of six t twelve years old, give half the amount (量). For children under six years old, ask your doctor’s advice.
Reduce the amount if you suffer from restlessness or sleeplessness after taking the medicine.
小题1:How many tablets at most can a person over 12 have in 24 hours?

A．Three

B．Four

C．Six

D．Eight

小题2: How many tablets should a nine-year-old kid normally take in 24 hours?

A．Half a tablet

B．One tablet

C．Two tablets

D．Four tablets

小题3:What is the advice for one who cannot sleep well after taking the medicine?

A．Stop taking the medicine at bedtime.	B．Continue to take the normal amount
C．Take more than the normal amount	D．Take less than the normal amount

小题4: It can be inferred from the medicine directions that this medicine ______.

A．helps you to fall asleep quickly	B．may be dangerous to small children
C．cannot be taken if one feels sleepy	D．should not be taken by kids under 6

小题5:This text is most probably taken from a _______.

A．textbook

B．newsreel

C．doctor’s notebook

D．bottle of medicine

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Passage 2
When you get tired of homework, several minutes’ walk in a nearby green park helps you relax at once. Or you may stand facing the lake or the seas. They will calm (not to be excited or nervous) you just like the green plants.
Wonder why? Color is a key part of the answers. Since it is so, green and blue help make people feel more quiet and safe.
All colors have special power. Scientists have found that many colors have specific effects (效果) on people’s mind and feelings.
Try an easy and interesting experiment and you’ll see how color “mislead” you sometimes. Wrap (包装) two boxes of the same size with colored paper, one red and the other white. Then weigh the two boxes with your hands. Which one is heavier? Most people will think that the red box is heavier, even though they weigh the same.
Colors can affect (影响) learning. Scientists have found that students spend more time reading if they read information written in blue text. Blue helps most people calm down and think more.
Clever uses of colors in daily life are to be seen everywhere. Hospitals and libraries seldom paint their walls, tables and desks red. They use light colors, like light blue or green. Red makes people excited while light colors help them relax. Haven’t worked out how color affects your daily life? Start with your small room. Try to make some changes in it and you’ll get to know how important color is!
小题1:The underlined word “mislead” means _____.

A．affects	B．effects
C．causes someone to have a wrong idea	D．give wrong directions

小题2:We’d better paint the walls of the hospital in _____.

A．light blue or light green	B．deep red or deep brown
C．deep orange or deep red	D．light green or light yellow

小题3:If you want to ______, you’d better sit in the room painted blue.

A．weigh something with your hands	B．study attentively
C．face the lake or the sea	D．enjoy some rock music

小题4:Which of the following is NOT true?

A．When you are going to have a rest, you’d better sit in the room painted green

B．Scientists have known some differences among some colors

C．When you get tired of homework, you should look at the green plants far away

D．The passage has told us clearly why some colors are warm and other colors are cool.

小题5:The reading mainly shows us _____.

A．the difference between red and blue

B．how to get on well with others

C．how to make smart uses of different colors in our daily life

D．how to paint and decorate our rooms

题型：不详难度：| 查看答案

阅读短文，根据要求完成下面各小题。
Canada is one of the best places in the world for a skiing(滑雪) vacation. Here are some good resorts(胜地) for skiing in Canada.
Canmore, one of the best resorts, is in Alberta, Canada. It is cheap and you can also stay in the National Park.
Another great place is Marmot Basin. This beautiful ski resort is also in Alberta. It’s one of the least crowded ski resorts in North America. 71. You can spend more time on the slopes(斜坡) and don’t need to wait to go back up the mountain.
Mount Tremblant Resort is in the beautiful Laurentian Mountains. It has a beautiful village(乡村), with a lot to see and do. This is a great place to enjoy winter and skiing.
Kicking Horse Mountain Resort is a four-season(季节) mountain resort. It is in the Canadian Rockies. You can enjoy skiing and sightseeing during the day and relax in the quiet hotel during the evening.
Have a look at these places before planning your skiing vacation. You are sure to find one you like.
（一）根据短文内容，回答下列各题。
小题1:How many places for skiing in Canada are mentioned(提到) in this passage?
_________________________________________________________________
小题2:Which two ski resorts are in Alberta?
_________________________________________________________________
（二）将文中划线的句子译成汉语。
小题3:_____________________________________________________________
（三）给短文拟一个合适的标题。
小题4:_____________________________________________________________

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In recent years advances in medical technology have made it possible for people to live longer than in the past．New medicines and machines are developing every day to extend life．However, some people，including some doctors，don’t agree with these life extending measures, and they say that people should have the right(权利)to die when they want．They say that the quality of life is as important as life itself，and that people should not be forced to go on living when conditions of life have become unbearable．They say that people should be allowed to die with dignity(尊严)and to decide when they want to die．Others don’t agree and say that life under any conditions is better than death and that the duty of doctors is always to extend life as long as possible．And so the quarrel goes on and on without a definite(明确的)answer．
小题1:People can live longer than in the past．It’s because _______．

A．medical technology develops	B．we have big hospitals
C．there are many good doctors	D．both B and C

小题2:According to some people whether a dying patient has the right to die is up to__________.

A．the doctors	B．the surroundings
C．his or her family	D．the patient himself or herself

小题3:In the writer’s opinion __________.

A．death is better than life	B．1ife is better than death
C．neither life nor death is good	D．none of the above

小题4:Why do some patients want to die? Because ________.

A．the doctors are not good	B．the conditions are bad
C．life is too hard	D．they are seriously ill

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